Rotary fan-motor.



No. 865,133. PATENTED SEPT..3, 1907.

W. G. STEVENS.

ROTARY FAN MOTOR.

urmoumx FILED JAN. 29. 1906.

1/ WA Y UNITED STATES 34 TENT OFFICE.

WILLIAM G. STEVENS, OF AKRON, OHIO, ASSIGNOR TO THE CROWN DRILLING MACHINE COMPANY, OF AKRON, 01-110, A CORPORATION OF OHIO.

' ROTARY FAN-MOTOR.

Specification of Letters Patent.

Patented Sept. 3, 1907.

Application filed January 29,1906. Serial No. 298,530.

To all whom it may concern:

Be it known that I, WILLIAM G. STEVENS, a citizen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented new and useful Improvements in Rotary Fan-Motors, of which the following is a specification 1 My invention has relation to improvements in means for rotating fans, blowers, etc.

The object of my invention is to produce a simple means for running a fan or blower, suitable for use in portable mechanism, and especially designed to be used in connection with forges employed in sharpening and repairing well-drilling tools, and from the nature of the use to which the device is put, it is necessarily transported from place to place, and experience has shown that the use of a belt and pulley in connection therewith is not attended with satisfactory results; and hence, the primary object sought is to furnish a simple compact motor attached to a fan and arranged to be driven by steam from any suitable supply.

To the accomplishment of the aforesaid object, my invention consists of the novel construction, combination and arrangement of parts constituting the invention to be hereinafter referred to and illustrated in the accompanying drawings which form a part of this specification in which is shown the preferred embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which come within the scope of the claims hereunto appended.

In the accompanying drawings, in which similar reference numerals indicate like parts in the different figures: Figure 1 is a side elevation of my device; and, Fig. 2 is a section on line X of Fig.1.

My device is primarily designed for use in connection with the ordinary centrifugal type of fans.

In the drawings, the fan casing is represented by the reference characters 1 and 2, which designate the two halves thereof which are united by bolts 3 passing through suitable ears 4, whereby the two halves of the fan casing are maintained in proper relation with respect to each other. This casing is provided with an outlet 5 to which is ordinarily secured a reducing nozzle 6, from which leads a pipe 7 to a point where the air driven by the fan is to be utilized. The air driven forward by the fan is taken into the fan casing through side openings 8, as is usual in such cases. On the member 1 of the fan casing are a plurality of outwardlyextending perforated posts 9, and these posts 9 are preferably integral with the casing body.

Secured on the posts 9 by means of cap-screws 10 is the motor casing 11, which is hollow and provided with a cylindrical recess 12. In this recess 12 is placed the rotary piston 13, which may be of any desired or preferred type. From the rear face of the motor casing 11 extends an integral member 14 which is centrally perforated to receive a rotatable shaft 15, on which is tightly mounted the piston 13. This shaft 15 is arranged to project centrally into the hollow of the fan casing and there sustain a hub 16 on which are mounted the fan blades 17, in the ordinary way. The front of the recess 12 in the motor casing is closed by a cap 18, which is secured to the casing 11 by means of screw threads, and this cap 18 is centrally perforated to receive and steady the forward end of the shaft 15 and serve as a bearing therefor. The operating fluid is admitted to and properly directed against the buckets on the rotary piston 13 by means of an induction pipe 19, which may be connected with any source of fluid supply under pressure. Below the recess 12, the casing 11 is hollowed out and turned abruptly to one side, and into this bent portion is secured a pipe 20 by which the supply of exhaust fluid is carried away. The fan may be mounted upon ordinary feet 21, as is customary with this type of devices.

The operation of the device, while believed to be apparent from the foregoing description, is as follows: A constant stream of fluid, such as steam, is introduced through the induction pipe 19, and, which, encounter ing the buckets on the piston 13 causes the rapid rotation thereof and a simultaneous movement of the shaft 15 and fan blades 17 which draw air into the fan casing through the openings 8 and deliver it in a constant stream through the discharge pipe 7. The fluid used for the motive power, after acting on the buckets on the rotary piston, passes downward through the hollow casing 11 and out through the exhaust pipe 20 to any convenient place. As has already been referred to, the use of a belt and pulley for rotating a fan in the field where drilling operations are being undertaken meets with very poor success, due to the weather conditions and the exposure of the belt to dampness and other similar conditions; and hence, the use of a motor, such as herein described, has been found extremely serviceable by reason of the fact that the fan and the motor may be placed at any reasonable distance from the boiler which furnishes the steam, the only thing necessary being the use of enough pipe to carry steam to the motor.

What I claim and desire to secure by Letters Patent,

The combination in a device of the class designated. of an upright fan casing provided with a plurality of integral laterallypxtending posts having in their ends longitudinally-arranged threaded holes, a motor casing havingan opening in one face and comprising a hollow cylindricallyformed member with projecting ears provided with means through which may he passed holdfast devices for engagement with the holes in said posts for retaining said casing detachahly in position, said casing being further provided with an integrally-depending outlet from the interior thereof and having an interiorlv-threaded portion adjacent said opening, said motor casing also provided with an integral]y-projecting sleeve extending from one face thereof to said fan casing, a shaft mounted in said sleeve extending into said fan casing, a fan mounted on said shaft within said fan casing, a rotary motor provided with peripheral buckets mounted in said motor casing, a fluid inlet in said motor casing, an oxteriOrly-threaded cap arranged to engage in the threads in the opening in said I 10 motor casingand close the same, said cap being provided l with an elongated hollow lug, the opening in which is arranged to inclose and support the extended end of said shaft when said cap is secured in position.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

WILLIAM C, STEVENS.

Witnesses C. E. I'IUMPI'IREY, GLEN'ARA Fox. 

